Boosting and anti-pushing integrated device of injector
By designing an integrated syringe pusher and anti-push device, and utilizing a combination of a holder and a limiting rod, the problem of cell preparation leakage caused by easy movement of the syringe plunger was solved, thus achieving safe storage and use.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- YUNNAN SHUNXI REGENERATION MEDICAL ENG CO LTD
- Filing Date
- 2025-06-04
- Publication Date
- 2026-04-14
AI Technical Summary
When pre-filling existing syringes with cell preparations, the plunger is prone to movement, causing leakage of the cell preparation, resulting in waste and insufficient use, which affects clinical efficacy.
Design a syringe pusher and anti-push integrated device. By combining the upper and lower clamps with the limiting rod, the device uses a self-destructing fracture structure to limit the forward movement of the push rod, ensuring the safe storage and use of cell preparations.
It effectively prevents the syringe plunger from moving forward, ensuring that cell preparations do not leak, reducing waste, guaranteeing usage, and improving clinical efficacy.
Smart Images
Figure CN224117695U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of bioengineering, and in particular to an integrated device for boosting and preventing syringe thrust. Background Technology
[0002] Pre-filled syringes are a packaging method where the cell preparation is directly filled into a syringe. This facilitates later use, reduces handling, and avoids contamination. However, a current risk with pre-filled syringes is that the syringe plunger protrudes after the cell preparation is filled. Under pressure, the plunger may move forward, leading to leakage of the cell preparation. This results in waste, and given the high cost of cell preparations, leakage not only causes significant losses but also leads to insufficient dosage, impacting clinical efficacy. Utility Model Content
[0003] Based on the above problems, the purpose of this utility model is to provide a syringe boosting and anti-boosting integrated device. The technical solution adopted by this utility model is as follows:
[0004] This utility model provides a syringe push-assist and anti-push integrated device, including an upper clamp and a lower clamp. The upper clamp is engaged with the syringe piston handle, and the lower clamp is engaged with the syringe outer cylinder rolled edge. A limiting rod is provided between the upper clamp and the lower clamp. Both ends of the limiting rod are provided with a self-destruct structure. The end of the limiting rod is connected to the upper clamp and the lower clamp through the self-destruct structure.
[0005] Preferably, the upper retainer includes an upper retaining block, the upper retaining block is provided with an upper U-shaped groove, the inner wall of the upper U-shaped groove is provided with a concave upper retaining groove, and the upper retaining groove engages with the syringe piston handle.
[0006] Preferably, the structure of the lower card holder is the same as that of the upper card holder.
[0007] Preferably, the lower retainer includes a lower retaining block, the lower retaining block is provided with a lower U-shaped groove, the inner wall of the lower U-shaped groove is provided with a concave lower retaining groove, the lower retaining groove is engaged with the rolled edge of the syringe outer barrel, and the lower retaining block is provided with push ears on both sides of the lower U-shaped groove.
[0008] Preferably, the lower card holder includes a lower card block, and the lower card block is provided with an elongated through hole.
[0009] Preferably, the limiting rod includes a sleeve, the upper end of which is connected to the upper retaining seat through the self-destructing fracture structure, a guide rod is provided in the sleeve, and the lower end of the guide rod is connected to the lower retaining seat through the self-destructing fracture structure; the outer wall of the guide rod is provided with a plurality of reverse teeth along its length, and the reverse teeth engage with the end of the sleeve.
[0010] Preferably, the self-destructing fracture structure includes multiple short columns, one end of which is connected to the limiting rod, and the other end is connected to the upper or lower retaining seat.
[0011] Compared with the prior art, the beneficial technical effects of this utility model are as follows:
[0012] This invention allows for adjustment of the appropriate height as needed, restricts the forward movement of the syringe plunger, and breaks off the limiting rod before use, making it convenient to use the syringe. Attached Figure Description
[0013] The present invention will be further described below with reference to the accompanying drawings.
[0014] Figure 1 This is a schematic diagram of the integrated syringe booster and anti-boost device in Embodiment 1 of this utility model;
[0015] Figure 2 This is a schematic diagram of the upper card holder in Embodiment 1 of this utility model;
[0016] Figure 3 This is a schematic diagram of the limiting rod and the self-destructing structure in Embodiment 1 of this utility model;
[0017] Figure 4 This is a schematic diagram of the use of the syringe booster and anti-push integrated device in Embodiment 1 of this utility model;
[0018] Figure 5 This is a schematic diagram of the use of the syringe booster and anti-boost integrated device in Embodiment 2 of this utility model;
[0019] Figure 6 This is a schematic diagram of the lower card holder in Embodiment 2 of this utility model;
[0020] Figure 7 This is a schematic diagram of the integrated syringe booster and anti-boost device in Embodiment 3 of this utility model;
[0021] Figure 8 This is a schematic diagram of the lower card holder in Embodiment 3 of this utility model;
[0022] Figure 9 This is a schematic diagram of the use of the syringe push-assist and anti-push integrated device in Embodiment 3 of this utility model.
[0023] Explanation of reference numerals in the attached drawings: 1. Upper retainer; 101. Upper retaining block; 102. Upper U-shaped groove; 103. Upper retaining groove; 2. Lower retainer; 201. Lower retaining block; 202. Through hole; 203. Pushing lug; 204. Lower U-shaped groove; 205. Lower retaining groove; 3. Limiting rod; 301. Sleeve; 302. Guide rod; 303. Back teeth; 4. Self-destructing structure upon fracture; 5. Syringe piston handle; 6. Syringe outer tube rolled edge. Detailed Implementation
[0024] To make the technical problems, technical solutions and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.
[0025] Example 1
[0026] like Figure 1 As shown, this embodiment discloses an integrated syringe push-assist and anti-push device, including an upper retainer 1 and a lower retainer 2. The upper retainer 1 is engaged with the syringe piston handle 5, and the lower retainer 2 is engaged with the syringe outer barrel rolled edge 6. A limiting rod 3 is provided between the upper retainer 1 and the lower retainer 2. Both ends of the limiting rod 3 are provided with a self-destructing fracture structure 4. The ends of the limiting rod 3 are connected to the upper retainer 1 and the lower retainer 2 through the self-destructing fracture structure 4.
[0027] In this embodiment, both the syringe piston handle 5 and the syringe outer barrel flange 6 are circular. For this type of syringe, such as Figure 2 As shown, the upper card holder 1 includes an upper card block 101, an upper U-shaped groove 102 is provided on the upper card block 101, and an inwardly recessed upper card groove 103 is provided on the inner wall of the upper U-shaped groove 102, which engages with the syringe piston handle 5.
[0028] In this embodiment, the structure of the lower card holder 2 is the same as that of the upper card holder 1.
[0029] like Figure 3 As shown, the limiting rod 3 includes a sleeve 301 and a guide rod 302. The upper end of the sleeve 301 is connected to the upper retaining seat 1 through a self-destructing fracture structure 4; the lower end of the guide rod 302 is connected to the lower retaining seat 2 through the self-destructing fracture structure 4. The guide rod 302 slides axially within the sleeve 301. Several reverse teeth 303 are provided along the length of the outer wall of the guide rod 302. The reverse teeth 303 engage with the end of the sleeve 301, restricting the retraction of the limiting rod 3. It should be noted that because the limiting rod 3 is made of plastic, the sleeve 301 and the reverse teeth 303 have a certain degree of deformation. The reverse teeth 303 located within the sleeve 301 abut against the inner wall of the sleeve 301. When the guide rod 302 is pulled outwards, the reverse teeth 303, after their deformation returns to normal, can then abut against the end of the sleeve 301.
[0030] like Figure 3As shown, the self-destructing fracture structure 4 includes multiple short sections 401. One end of each short section 401 is connected to a limiting rod 3 (sleeve 301 or guide rod 302), and the other end is connected to an upper retaining seat 1 or a lower retaining seat 2. In use, rotating the upper end of the sleeve 301 causes each short section 401 to break, thereby separating the sleeve 301 from the upper retaining seat 1. Similarly, rotating the lower end of the guide rod 302 causes each short section 401 to break, thereby separating the guide rod 302 from the lower retaining seat 2.
[0031] like Figure 4 As shown, the utility model is used as follows:
[0032] After the cell preparation is filled into the syringe, the syringe plunger protrudes. The limiting rod 3 is adjusted to a suitable height as needed. Then, the upper locking groove 103 in the upper locking seat 1 engages with the syringe piston handle 5. Simultaneously, the upper locking groove 103 in the lower locking seat 2 engages with the syringe outer barrel flange 6. This restricts the forward movement of the syringe plunger. When it is necessary to use the syringe to eject the cell preparation, the self-destructing breakage structure 4 at both ends of the limiting rod 3 is twisted off, allowing the syringe plunger to be pushed forward.
[0033] Example 2
[0034] In this embodiment, both the syringe piston handle 5 and the syringe outer barrel flange 6 are circular. For this type of syringe, such as Figure 5 and 6 As shown, this embodiment further designs the lower retainer 2 based on the technology in Embodiment 1. Specifically, the lower retainer 2 includes a lower retaining block 201, which is connected to the limiting rod 3 via a self-destructing fracture structure 4. A lower U-shaped groove 204 is also provided on the lower retaining block 201, and a concave lower retaining groove 205 is provided on the inner wall of the lower U-shaped groove 204. The lower retaining groove 205 on the lower retaining block 2 engages with the outer edge 6 of the syringe barrel. Pushing ears 203 are provided on both sides of the lower U-shaped groove on the lower retaining block 201.
[0035] When it is necessary to use a syringe to dispense the cell preparation, after twisting off the self-destructing structures 4 at both ends of the limiting rod 3, the lower retainer 2 can be retained. The syringe can be easily advanced with the help of the push ears 203 on both sides of the lower retainer 2. The remaining structures in this embodiment are the same as in Embodiment 1.
[0036] Example 3
[0037] In this embodiment, the syringe piston handle 5 is circular, and the syringe outer barrel has a double-eared rolled edge 6. For this type of syringe, such as Figures 7 to 9As shown, the upper retainer 1 has the same structure as described in Embodiment 1. The lower retainer 2 includes a lower retaining block 201, on which an elongated through hole 202 is provided. The height of the through hole 202 is less than the thickness of the syringe outer barrel crimp 6, so that the through hole 202 can be clamped on the syringe outer barrel crimp 6. The remaining structure in this embodiment is the same as in Embodiment 1.
[0038] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.
Claims
1. A syringe propulsion and anti-propulsion integrated device, characterized in that: It includes an upper retainer (1) and a lower retainer (2). The upper retainer (1) is engaged with the syringe piston handle (5), and the lower retainer (2) is engaged with the syringe outer barrel rolled edge (6). A limiting rod (3) is provided between the upper retainer (1) and the lower retainer (2). Both ends of the limiting rod (3) are provided with a self-destructing fracture structure (4). The end of the limiting rod (3) is connected to the upper retainer (1) and the lower retainer (2) through the self-destructing fracture structure (4).
2. The syringe booster and anti-boost integrated device according to claim 1, characterized in that: The upper card holder (1) includes an upper card block (101), an upper U-shaped groove (102) is provided on the upper card block (101), and an inwardly recessed upper card groove (103) is provided on the inner wall of the upper U-shaped groove (102), and the upper card groove (103) is engaged with the syringe piston handle (5).
3. The syringe booster and anti-boost integrated device according to claim 2, characterized in that: The structure of the lower card holder (2) is the same as that of the upper card holder (1).
4. The syringe booster and anti-boost integrated device according to claim 1, characterized in that: The lower retainer (2) includes a lower retaining block (201), on which a lower U-shaped groove (204) is provided. A concave lower retaining groove (205) is provided on the inner wall of the lower U-shaped groove (204). The lower retaining groove (205) engages with the rolled edge (6) of the syringe outer barrel. A booster ear (203) is provided on both sides of the lower U-shaped groove (204) on the lower retaining block (201).
5. The syringe booster and anti-boost integrated device according to claim 1, characterized in that: The lower card holder (2) includes a lower card block (201), and the lower card block (201) is provided with an elongated through hole (202).
6. The syringe booster and anti-boost integrated device according to claim 1, characterized in that: The limiting rod (3) includes a sleeve (301), the upper end of which is connected to the upper card seat (1) through the self-destructing fracture structure (4), and a guide rod (302) is provided in the sleeve (301), the lower end of which is connected to the lower card seat (2) through the self-destructing fracture structure (4). The outer wall of the guide rod (302) is provided with a plurality of reverse teeth (303) along the length direction, and the reverse teeth (303) are engaged with the end of the sleeve (301).
7. The syringe booster and anti-boost integrated device according to claim 1, characterized in that: The self-destructing fracture structure (4) includes multiple short columns (401), one end of which is connected to the limiting rod (3), and the other end is connected to the upper card seat (1) or the lower card seat (2).